Base | Representation |
---|---|
bin | 111111100110101111… |
… | …101001000110000000 |
3 | 20112021122111222122020 |
4 | 333212233221012000 |
5 | 2104332203230313 |
6 | 51212531041440 |
7 | 4635301236456 |
oct | 774657510600 |
9 | 215248458566 |
10 | 68295758208 |
11 | 26a671a1a87 |
12 | 112a0140280 |
13 | 6595344462 |
14 | 343c5489d6 |
15 | 1b9abc0323 |
hex | fe6be9180 |
68295758208 has 128 divisors (see below), whose sum is σ = 183565116000. Its totient is φ = 22496428032.
The previous prime is 68295758203. The next prime is 68295758257. The reversal of 68295758208 is 80285759286.
It is a tau number, because it is divible by the number of its divisors (128).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68295758203) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12044398 + ... + 12050066.
Almost surely, 268295758208 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 68295758208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91782558000).
68295758208 is an abundant number, since it is smaller than the sum of its proper divisors (115269357792).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68295758208 is a wasteful number, since it uses less digits than its factorization.
68295758208 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6052 (or 6040 counting only the distinct ones).
The product of its (nonzero) digits is 19353600, while the sum is 60.
The spelling of 68295758208 in words is "sixty-eight billion, two hundred ninety-five million, seven hundred fifty-eight thousand, two hundred eight".
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